an unbelievable security flaw in locks, this is a very good lockpicking technique, works on at least 90% of all pin locks, very interesting, the man in the video is Barry Wels, a lock and security extrodinaire.
This is a relatively old concept and this technique was mostly used with pick guns, not many people knew that this could be done with a key, but it requires no pick gun or any special tools and no lock picking concept to get this to work. All you need is a key blank that fits a lock and a file or key cutter and some craft ability
Very interesting video. What's fucked up though is that you can't claim it to your insurance company if someone stole something from you since there will be no trace of a break-in.